Tube-frame bracket



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Patented Dec. 27, 1927.

LGS-'M222 UNITED STATES PATENT oFFicE.

.ALBERT A. GORDON, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMITON LKNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

Application filed December 30, 1926.

This invention relates to brackets form ing the ents oi the yarn, tubetrainee used in Amninster carpet looms. Such brackets provide bearingsfor the outer ends of the yarn spools and also support the chainengaging elem-ents by which the tube traine is attached to thetransporting pattern chains.

1t is the object ot :my invention to improve the general construction otsuch tube trame brackets, and particularly to improve the provision forpositioning a spring hook therein. A further object is to provide aniinproved arrangement `tor securing the spring hoolr to the bracket andior prcventing lateral displacement thereof.

My invention further relates to arrangements and combinations ot partswhich will be hereinafter described and lnore particularly pointed ontin the appended clain'is.

A preferred torna of the invention is shown in the drawings in whichFig. 1 is a front elevation ot a portion of a tube traine, partly insection, and having iny improved bracket attached thereto;

Fig. 2 is an end elevation, looking in the direction of the arrow 2 inFig. 1;

Fig. 3 is a liront elevation, partly in sec tion, and illustrating themanner of asseniblin g the spring and bracket;

' Fig. 4- is an enlarged sectional view, taken along the line 4.11 ofFig. 1; .and

Fig. 5 is a view .similar to Fig. 17 but showing the parte in aditterent position.

Roter-ring to the drawings, I have indicated a portion ot a rectangulartulnilar member which :onstitutes a suppfn't for the yarn tubes l1.

ltty iinprmfed tube 'frame bracket cornprises portions '12 and 153secured within the tubular member 1() by screws '1 /1. The ineniber 12is substantially L-shaped and the member 13 has an. olliset lower endportion, as indicated at 15. The upright portion of the inenlber 12 isprovided with outwardlydisplaced bearing port-ions 16 (Fig. 4c),engaging the member 13 and holding the 1nenibers 12 and 13 in definitelyspaced relation. The parts 12 and 18 are permanently se cured together,however, either by rivets as indicated at 17 in. Fig. 4t. or by weldingor otherwise securing the parts together.

lthe member 13 is projected upwardly and has a portion 18 :forming aspool bearing and Serial N0. 156,066.

an offset portion 19 adapted to extend be tween the links of atransporting pattern chain C. The member 13 is also provided with. aslot 20 and the oilset portion 19 is provided with a slot 21.

A spring hook 9.2, prehn'abl)T ot double thickness, is so termed thatits lower end portion 23 1n ay be passed downward tl'n'ough the slot 21and rearward through the slot 20 and may be received in the recess E24;(Fig. il), termed between the projections 1o. rThe lower end 23 oit thespring 22 is provided. with an opening 25, and the depending portion ofthe member 12 is provided with a similar opening 2G. A tapped hole 9.7is formed inthe nieinber 13 and is aligned with the hole 2G.

ln assembling the parts, the spring 22 inserted in the recess 2st, and ascrew 30, having a reduced cylindrical or stud 31, is insel-ted in thetapped hole 27. The portion 31 extends through the opening 9.5 in thespring and into the opening QG in the inernu ber 12. A spring washer 3Q.may be placed on the reduced portion 31 and will be 'forced against thespring 22 to prevent displacenient of the screw 30.

The lower portion 9.3 et the sliring E22 is formed of the exact widthott the slot 20 so that the spring tits snugly therein and is thus heldtroni lateral displacement while the screw at the saine time preventslongiu tudinal displacement. The upper slot 21 is wider than the springhook, which is thus free to swing in its upper portion.

The screw 2:30 :is also toifinod ot extra length and projects outward,as imlicnted in liig. 5, to such a position that it nuiv be engaged by aspring stud lli and prevent downward. movement oi." a clutch arlu 3G, itfor any reasoii. the spring hook 2?, is 'not detaehml from the chain C.

A stud or stop `37 on the clntch arm 'li normally engages the s infing22 and pushes the spring back to inoperative position, as indicated inFig. 5, whenever it is intended to disengage the tube traine from thechain.

I have thus provided a construction in which the hook 22 is very firmlyretained in the tube 'frame bracliiet.` and with this construction,accidental displacement ot the hook is rendered practically impossible.ln case et breakage, however, the hoolt is veijv lili? easily replacedby simply removing the screw 30. The spring hook is also held fromlateral displacement by the sides of the slot 20, and is free to swingat its upper port-ion in the slot 21.

Having thus described my invention and the advantages thereof, I do notwish to be limited to the' details herein disclosed otherwise than asset forth in the claims, but what I claim is l. A tube frame bracketcomprising two rigid frame members, one o't said members having portionsup-set thereon effective to space said members apart and to provide arecess between said members and defined at the sides by said up-setportions, a spring hook having its lower end seated in said recess, andmeans to secure said hook in position.

2. A tube frame bracket comprising a rigid frame having a slot and arecess formed therein, a chain engaging hook extending through saidslotand into said recess and means to secure said' hook in position,p0rtions ofsaid hook closely engaging the sides of said slot, and saidhook being held from lateral displacement by such engagement.

3. A tube frame bracket comprising two rigid frame members securedtogether in spaced relation and having a recess formed therein and openat the top only.` and one of said members having a slotabove saidrecess, a spring hook extending through said slot and into said recess,and means to secure said hook in said recess, a portion of said springengaging the sides of said slot and said hook'being thereby held fromlateraldisplacement.

4. A tube frame bracket comprising a rigid frame portion having upperand lower slots formed therein, and a spring hook extending through bothslots and having its lower end portion firmly secured to `said frameportion, said hook iilting eloseliv against the sides ol said lower slotbut having substantial side clearance in said upper slot.

A tube frame bracket comprising a. rigid frame portion having a recess`formed therein and open at the top only. a spring hook seated in saidrecess, and a screw threaded in said frame portion and having a rearwardstud projection extending llirongh an opening in said spring hook andinto an opening in said iranic portion aligned (herewith andfirmly-securing said spring hook in position.

6. A tube frame bracket comprising a rigid frame portion having a recess'formed therein and open at the top only` a springl hook seated in saidrecess. and a screw threaded in said frame portion and having a rearwardstud projection extending through an opening in said spring hoolrV andinto an opening in said frame portion aligned therewith and fir-ml)vsecuring said saring hook in position. said screw having an elongatedthreaded head portion extending outwardly to provide a lug forengagement with a portion ot a clutch arm. il the tube frame does notmovey downward with said arm.

In testimony whereof I have hereunto al` fixed my signature.

ALBERT A. GORDON.

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